MRA is a dynamically reconfigurable antenna structure that is capable of changing its properties according to certain input configurations. A comprehensive experimental analysis was conducted to characterize the system performance in typical indoor environments. The experiments were performed using a fabricated MRA that has 4096 configurable radiation patterns. The achieved MRA-based passive self-interference suppression was investigated, with detailed analysis for the MRA training overhead. In addition, a heuristic-based approach is proposed to reduce the MRA training overhead. The results show that at 1-percent training overhead, a total of 95 dB self-interference cancellation is achieved in typical indoor environments. The 95-dB self-interference cancellation is experimentally shown to be sufficient for 90-percent full-duplex rate improvement compared with half-duplex systems. (Publisher abstract modified)
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